Surnames are coded according to the following rules.
The letters a,e,i,o,u,y,w, and h are not coded. The first letter of a surname is not coded.
Every Soundex number must be a 3-digit number. A name yielding no code numbers, as Lee, would thus be L000; one yielding only one code number would have two zeros added, as Kuhne, coded as K500; and one yielding two code numbers would have one zero added, as Ebell, coded as E140. Never are more than three digits used, so Ebelson would be coded as E142 not E1425.
When two key letters or equivalents appear together, or one key letter immediately follows or precedes an equivalent, the two are coded as one letter, by a single number, as follows: Kelly, coded as K400; Buerck, coded as B620; Lloyd coded as L300; and Schaefer, coded as S160.
When several surnames have the same soundex number they are arranged alphabetically by the given name.
Prefixes to surnames as: "VAN", "DI", "DE", "LE", "D", "DELA", or "DU" are usually included in the soundex coding.
Use caution, such prefixes to surnames are sometimes disregarded in alphabetizing and coding.
Letters Code Name Coded No. VANMETER n,t,r V 536 VANJOHNSON n,j,n V 525 VONVALKINBURG n,v,l V 514 DEBARTOLA b,r,t D 163 DECORTEZ c,r,t D 263 LEMOND m,n,d L 553 DHEMECOURT m,c,r D 526 DELAROSA l,r,s D 462 DUBOIS b,s D 120 The following names are additional examples of Soundex coding. Letters Code Name Coded No. ALLRIGHT l,r,c A 462 EBERHARD b,r,r E 166 ENGEBRETHSON n,g,b E 521 HEIMBACH m,b,c H 512 HANSELMANN n,s,l H 524 HENZELMANN n,z,l H 524 HILDEBRAND l,d,b H 431 KAVANAGH v,n,g K 152 LUKASCHOWSKY k,s,s L 222 MCDONNELL c,d,n M 235 MCGEE c M 200 OBRIEN b,r,n O 165 OPNIAN p,n,n O 155 OPPENHEIMER p,n,m O 155 RIEDEMANAS d,m,n R 355 VANLANDINGHAM n,l,n V 545 ZITA t Z 300 ZITZMEINN t,z,m Z 325The above is presented for those who are interested in understanding the rules by which names are Soundexed. It is no longer necessary to convert surnames manually, since our Soundex Converter will do it for you.